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Room-temperature spin injection across a chiral perovskite/III–V interface

Journal Article · · Nature (London)
 [1];  [2];  [1];  [3];  [1];  [1];  [3];  [1];  [1];  [1];  [1];  [1];  [4];  [5];  [1];  [2];  [4];  [4];  [4]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
  2. Univ. of Utah, Salt Lake City, UT (United States)
  3. National Renewable Energy Laboratory (NREL), Golden, CO (United States); Colorado School of Mines, Golden, CO (United States)
  4. National Renewable Energy Laboratory (NREL), Golden, CO (United States); Univ. of Colorado, Boulder, CO (United States). Renewable and Sustainable Energy Institute (RSEI)
  5. Universite de Lorraine, Nancy (France). Institut Jean Lamour; Centre National de la Recherche Scientifique (CNRS) (France)
Spin accumulation in semiconductor structures at room temperature and without magnetic fields is key to enable a broader range of optoelectronic functionality. Current efforts are limited owing to inherent inefficiencies associated with spin injection across semiconductor interfaces. Here we demonstrate spin injection across chiral halide perovskite/III-V interfaces achieving spin accumulation in a standard semiconductor III-V (AlxGa1-x)0.5In0.5P multiple quantum well light-emitting diode. The spin accumulation in the multiple quantum well is detected through emission of circularly polarized light with a degree of polarization of up to 15 ± 4%. The chiral perovskite/III-V interface was characterized with X-ray photoelectron spectroscopy, cross-sectional scanning Kelvin probe force microscopy and cross-sectional transmission electron microscopy imaging, showing a clean semiconductor/semiconductor interface at which the Fermi level can equilibrate. Finally, these findings demonstrate that chiral perovskite semiconductors can transform well-developed semiconductor platforms into ones that can also control spin.
Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Hybrid Organic-Inorganic Semiconductors for Energy (CHOISE); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); National Renewable Energy Laboratory (NREL), Golden, CO (United States); Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
89233218CNA000001; AC36-08GO28308; NA0003525
OSTI ID:
2403524
Report Number(s):
NREL/JA--5900-87460; MainId:88235; UUID:2c00c066-16a8-409c-a78f-b4c9c5f67b49; MainAdminId:73135
Journal Information:
Nature (London), Journal Name: Nature (London) Journal Issue: 8020 Vol. 631; ISSN 0028-0836
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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